Question

Gland W releases a hormone X in human. The hormone X is also required in frog for their development from tadpole to adult frog. The hormone X requires nutrient Y for secretion. If it is deficient in our diet then it causes disease Z.

a) Identify W, X, Y and Z

b) Give one source of Y.

c) Give two effects of disease Z

d) Mention the function of hormone X​

Answer 1

Answer:

I think (b)ya ( c) .....I think

Answer 2

The answers are written below

a) W is the thyroid gland.

X is the thyroxine hormone.

Y is nutrient iodine.

Z is the deficiency disease goiter.

b) Iodized salt, fish and dairy products are sources of iodine.

C) Two effects of goiter are -

1. Thyroid enlargement which is visible as swelling at the base of neck.
2. Coughing, difficulty in breathing and swallowing.

d) Thyroxine serves various important functions in the body. Some of them are development of brain, digestion and working of heart and muscle.